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Why do some people have normal thyroid labs yet still feel exhausted, foggy, or gain weight? One of the most common questions where hormones are concerned is what dose of one form is equivalent to another. Hence, the high to very high doses are indicated for estradiol monotherapy (i.e., estradiol alone without an antiandrogen). On average, the high dose will suppress testosterone levels by about 90%, to around 50 ng/dL (Wiki; Aly, 2018).
Free hormone testing helps clarify true thyroid levels. Most hormones circulating in the blood are protein bound. Total T4 and Total T3 reflect all hormones circulating in the blood. The total T4 test measures the bound and free hormone circulating in the blood.
You can have normal TSH and T4 and still have low Free T3. Low Free T4 means your thyroid is not producing enough in the first place. TSH tells us what your brain is asking the thyroid to do.
This steroid hormone can increase fat deposition, resulting in more conversion of testosterone to estrogen. Higher body fat (adipose tissue) increases aromatase enzyme activity, leading to greater testosterone conversion to estrogen. On TRT, testosterone levels surge, prompting the body to convert excess testosterone into estrogen via aromatase.
Conversely, some people may get relatively high levels with the transdermal route or with injections. Differences in molecular weight between these esters are minor (Table) and can be ignored for simplicity. B Based on sublingual estradiol having ~2- to 5-fold greater bioavailability than oral estradiol per candy96.fun studies (Wiki; Sam, 2021). Oral estradiol 1.5 mg is equivalent to about 2 mg oral estradiol valerate (Wiki). Transfeminine people often ask about equivalent dosages of estradiol by different routes of administration.
SI is a system based on the meter-kilogram-second system of units rather than a centimeter-gram-second system. Unlike the other SI base units, the kilogram is the only SI base unit with an SI prefix. The UK also often uses both pounds and stones when describing body weight, where a stone is comprised of 14 pounds.
Or, when there is a hormone shortage, which has happened before and you can read about why those can happen in a previous post. For example, someone might be using an estradiol patch and is happy with it, but is getting a rash from the adhesive and wants to switch to a topical gel. The conversion factors provided are derived from current literature and applied as published; therefore, we cannot take responsibility for the accuracy or validity of these conversion factors.We are happy to expand the list of parameters. Table of conversion factors for Estradiol (E2) unit conversion to pmol/L, pg/mL, pg/dL, pg/100mL, pg%, pg/L, ng/L .
Prior to the current definition, the kilogram was defined as being equal to the mass of a physical prototype, a cylinder made of a platinum-iridium alloy, which was an imperfect measure. A new definition of the kilogram was introduced in 2019 based on Planck's constant and changes to the definition of the second. The kilogram was originally defined as the mass of one liter of water at its freezing point in 1794, but was eventually re-defined, since measuring the mass of a volume of water was imprecise and cumbersome. This is at least in part due to the inconsistencies and lack of coherence that can arise through use of centimeter-gram-second systems, such as those between the systems of electrostatic and electromagnetic units. The changes were intended to improve the definitions of SI base units, not to actually change how the units are used throughout the world. Even though the definition of the kilogram was changed in 2019, the actual size of the unit remained the same.
However, total values can be influenced by protein changes. This free hormone drives metabolic activity and supports energy production. The thyroid gland is a small butterfly shaped organ in the neck. To use, enter your E2 and T in either SI or US units, then click the button to calculate. In other words, the same dosage in different types of HRT might have more or less of an effect on your body. Keep in mind, though, that not only are these rough equivalencies, but also that your body may react differently to the individual forms of HRT.
We treat patients from across metro Atlanta — Dunwoody, Buckhead, Brookhaven, Chamblee, and beyond. Hashimoto’s and primary hypothyroidism typically require long-term support. You can have hypothyroidism without Hashimoto’s, but Hashimoto’s is the most common cause of hypothyroidism in the US. Hypothyroidism is what results from that damage. Hashimoto’s is an autoimmune condition where your immune system attacks the thyroid gland.